Sandal upper



FIG. 1 is a top perspective view of a sandal upper showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a top plan view of the front portion of a second embodiment; and,

FIG. 7 is a rear elevational view of both embodiments.

The broken line showing of a shoe sole in FIGS. 1-7 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a sandal upper, as shown and described. 